Versuche, Unterhaltungen und Belustigungen aus der natürlichen Magie : zur Lehre, zum Nutzen und zum Vergnügen bestimmt
A German handbook of scientific amusements and conjuring experiments by instrument maker Johann Conrad Gütle with Johann Ludwig Stahl, published at Leipzig and Jena in 1791 for amateur experimenters and showmen. Copper-engraved plates crowd numbered figures onto single sheets: friction electrical machines, Leyden jars, glass globes, stands, bells and small stage figures, useful as apparatus silhouettes, diagram grids and hand-lettered figure keys.
